NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2021-10-26 825-449 not yet reported which blocks → Videotron Ltd. 787G Calgary —
2021-10-26 825-459 not yet reported which blocks → Videotron Ltd. 787G Edmonton —
2021-10-26 857-688 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H DORCHESTER MA
2021-10-26 858-328 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LA MESA CA
2021-10-26 862-385 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F PATERSON NJ
2021-10-26 862-386 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 CALDWELL NJ
2021-10-26 862-387 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 PATERSON NJ
2021-10-26 862-388 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 PASSAIC NJ
2021-10-26 908-786 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H PLAINFIELD NJ
2021-10-26 930-252 1XXX2XXX8XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LYNNVILLE IN
2021-10-26 945-227 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-26 970-804 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 GREELEY CO
2021-10-26 971-416 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2021-10-26 985-347 0–9 XXXall 10 · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C HOUMA LA
2021-10-25 223-667 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H COLUMBIA PA
2021-10-25 224-438 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKEZURICH IL
2021-10-25 224-866 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H DESPLAINES IL
2021-10-25 229-501 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J ALBANY GA
2021-10-25 240-946 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H WSNG236Z14 MD
2021-10-25 364-213 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → NUSO, LLC 478J BOWLNGGREN KY
2021-10-25 442-944 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H VISTA CA
2021-10-25 445-545 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E PHPHSBZN32 PA
2021-10-25 470-866 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA NE GA
2021-10-25 502-789 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SHEPHEDSVL KY
2021-10-25 520-605 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F TUCSON AZ
2021-10-25 562-669 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NORWALK CA
2021-10-25 567-359 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
2021-10-25 567-500 0XXX1XXX2XXX5XXX · 4 holders which blocks → FRACTEL, LLC 965H ATTICA OH
2021-10-25 580-400 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H LAWTON OK
2021-10-25 667-359 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MD 071F COLUMBIA MD
2021-10-25 667-899 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BALTIMORE MD
2021-10-25 672-868 not yet reported which blocks → Fibernetics Corporation 464D Winter Harbour —
2021-10-25 672-869 not yet reported which blocks → Fibernetics Corporation 464D Tahsis —
2021-10-25 672-870 not yet reported which blocks → Fibernetics Corporation 464D Port Renfrew —
2021-10-25 672-871 not yet reported which blocks → Fibernetics Corporation 464D Ocean Falls —
2021-10-25 672-872 not yet reported which blocks → Fibernetics Corporation 464D Jordan River —
2021-10-25 708-312 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E BLUEISLAND IL
2021-10-25 720-831 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CO 7378 DENVER CO
2021-10-25 720-853 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F LONGMONT CO
2021-10-25 720-869 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2021-10-25 720-894 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F DECKERS CO
2021-10-25 734-541 2XXX5XXX · 2 holders which blocks → NUSO, LLC 478J NOSYLVANIA MI
2021-10-25 762-732 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H COMMERCE GA
2021-10-25 808-302 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J HONOLULU HI
2021-10-25 816-955 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H KANSASCITY MO
2021-10-25 830-349 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 CASTROVL TX
2021-10-25 840-688 0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H CRESTLINE CA
2021-10-25 878-239 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J ZELIENOPLE PA
2021-10-25 878-336 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H PTTSBGZON6 PA
2021-10-25 878-465 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H WEXFORD PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.